PDB_Stat_100_Lecture_02

PDB_Stat_100_Lecture_02 - STA 100 Lecture 2 Paul Baines...

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Unformatted text preview: STA 100 Lecture 2 Paul Baines Department of Statistics University of California, Davis January 5th, 2011 Admin for the Day I First homework will be posted on the website today, due Wednesday, Jan 12th in class Recap from Last Time I Course Logistics I Examples of Statistics in the World I Simpsons Paradox: 1. Aggregate vs. Subgroup comparisons can disagree. Why? 2. Moral of the Course: It depends. Why? Topics for Today 1. Types of Data: 2. Exploratory Data Analysis: 3. Descriptive Statistics: Toxicology Example: Lead Data The Effect of Lead Exposure on Mental and Neurological Functions in Children. This was the datset for last quarters end-of-term project. Castaway Model For the lead example, and throughout the course, we will employ a castaway model i.e., if you were stranded on a desert island with no statistics books (and needed to do some statistics), these are the methods you would likely come up with. Toxicology Example: Lead Data I Variables: Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter 2. Physical: blood lead levels (1972 & 1973), Pica, Colic, Irritability, Clumsiness Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter 2. Physical: blood lead levels (1972 & 1973), Pica, Colic, Irritability, Clumsiness 3. Neurological: IQ, Hyeractivity (WWP Scale), Right/Left Reaction Times (msec), Hand Movement (no. taps) Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter 2. Physical: blood lead levels (1972 & 1973), Pica, Colic, Irritability, Clumsiness 3. Neurological: IQ, Hyeractivity (WWP Scale), Right/Left Reaction Times (msec), Hand Movement (no. taps) I Observations: 124 Children. Toxicology Example: Lead Data I Variables: 1. Background: Age, Sex, Distance from smelter 2. Physical: blood lead levels (1972 & 1973), Pica, Colic, Irritability, Clumsiness 3. Neurological: IQ, Hyeractivity (WWP Scale), Right/Left...
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This note was uploaded on 03/09/2011 for the course STAT 100 taught by Professor drake during the Spring '10 term at UC Davis.

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PDB_Stat_100_Lecture_02 - STA 100 Lecture 2 Paul Baines...

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